D12121212213231323132323323132322331323223313113121123313231323222211   >>    D1212121221323132313232332313232233132322331311312112331323132322221   <<    D12121212213231323132323323132322331323223313113121123313231323222213   >>      D12121212213231323132323323132322331323223313113121123313231323222212   >>